Reproductive performance in female strains of Nile tilapia, Oreochromis niloticus

Diones Bender Almeida, Marco André Paldês da Costa, Liane Ney Bassini, Cecilia Irene Pérez Calabuig, Carla Giovane Avila Moreira, Marília Danyelle Nunes Rodrigues, Harold Julian Pérez, Rafael Aldrighi Tavares, Antonio Sergio Varela, Heden Luiz Marques Moreira

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

The Nile tilapia is among the most cultivated tropical fish in the world, yet little is known about the variations in reproductive characteristics among different strains. There is an interest in evaluating the reproductive performance of females of three tilapia strains. All strains were represented in equal proportion (n = 225), being named as Supreme (SUP), Premium Aquabel (PA), and Chitralada (CHI). These fish were cultivated for 7 weeks in the Aquabel Pisciculture Station (Brazil), from January to March 2011. The PA was the largest strain, with the highest values in all the morphometric parameters we analyzed (weight, total length, standard length and body depth). Among the evaluated reproductive parameters, the PA strain differed significantly from the other two in number and weight of eggs/female, volume of eggs/spawn and number of eggs/kg of fish. The percentage of non-spawning females in the SUP and CHI strains differed significantly from one another, while results for PA showed intermediate values and no significance compared to the other strains (P > 0.05). Among the reproductive parameters analyzed, the percentage of spawned females/week, more than one spawns during 7 weeks, and hatching rate showed no significant differences between strains (P > 0.05). There was a significant correlation (r = 0.69) between water temperature and percentage of spawned females/week. When evaluating the interval between two consecutive spawns, we observed that periods of 21 days were the most frequent in all strains. In conclusion, the strain that showed the best results in all morphometric and in most reproductive parameters we evaluated was the PA.

Original languageEnglish
Pages (from-to)1291-1300
Number of pages10
JournalAquaculture International
Volume21
Issue number6
DOIs
Publication statusPublished - 1 Dec 2013

Keywords

  • Aquaculture
  • Larviculture
  • Morphology
  • Reproduction
  • Spawns

ASJC Scopus subject areas

  • Aquatic Science
  • Agronomy and Crop Science

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